As an amateur foster cat caregiver, I treat the symptoms like a goopy eye, but aggressively. For a weepy eye like that, it can easily and quickly end up with a secondary bacterial infection that then progresses to an enuncleation being needed. I check the eyes every 2-4hrs minimum with a weepy eye like that, hold a warm water washcloth over the eye until the gunky stuff loosens, and gently wipe away all gunk. The kitties usually hate that process, but sometimes it saves the eye. Another thing I might suggest is trying over the counter sterile saline drops intended for eyes (maybe once a day), if you have them available at your local pharmacy. They may do nothing, but they shouldn't hurt any. If you do it often enough, sometimes it will keep the eyegoop from getting black and crusty (and therefore much harder and more likely to damage the eye as you work to get it off). Another thing that can happen either due to or secondary to the weepy eye is conjunctivits. A red painful eye is usually a good indication of conjunctivitis. Watch for that as it. Cough and lung stuff is often helped by warm humidification. A humidifier is nice, but, little things, like locking your cat in the bathroom while you have a long hot shower or putting Eucalyptus menthol Vaseline on your chest and having the cat cuddle up to you to get it to breath it in to try and clear the lungs (don't put it directly on the cat,), are a few ideas from the basic front. Hope this helps.
#PetHealthandNutrition